Begin processing #extension directive

Nowhere near complete.  It just parses correctly at this point.

1 files changed, 16 insertions, 2 deletions

diff --git a/glsl_parser.ypp b/glsl_parser.ypp
index b8c01b508d..250c51c7ee 100644
--- a/glsl_parser.ypp
+++ b/glsl_parser.ypp
@@ -190,13 +190,13 @@ translation_unit:
 	{
 	   _mesa_glsl_initialize_types(state);
 	}
-	external_declaration_list
+	extension_statement_list external_declaration_list
 	|
 	{
 	   state->language_version = 110;
 	   _mesa_glsl_initialize_types(state);
 	}
-	external_declaration_list
+	extension_statement_list external_declaration_list
 	;
 
 version_statement:
@@ -217,6 +217,20 @@ version_statement:
 	}
 	;
 
+extension_statement_list:
+
+	| extension_statement_list extension_statement
+	;
+
+extension_statement:
+	EXTENSION IDENTIFIER COLON IDENTIFIER EOL
+	{
+	   if (!_mesa_glsl_process_extension($2, & @2, $4, & @4, state)) {
+	      YYERROR;
+	   }
+	}
+	;
+
 external_declaration_list:
 	external_declaration
 	{